CN204316318U - A kind of low-pass filtering inversion system of high stability - Google Patents
A kind of low-pass filtering inversion system of high stability Download PDFInfo
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- CN204316318U CN204316318U CN201420699039.2U CN201420699039U CN204316318U CN 204316318 U CN204316318 U CN 204316318U CN 201420699039 U CN201420699039 U CN 201420699039U CN 204316318 U CN204316318 U CN 204316318U
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Abstract
The utility model discloses a kind of low-pass filtering inversion system of high stability, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, the low-pass filter circuit be connected with the former limit of transformer T1 forms, and it is characterized in that: between logic control circuit and low-pass filter circuit, be also provided with voltage stabilizing circuit; Described voltage stabilizing circuit is by triode VT4, triode VT5, pressurizer U, the electric capacity C2 that positive pole is connected with the base stage of triode VT5 after diode D5, negative pole andlogic control circuit is connected, the resistance R6 that one end is connected with the emitter of triode VT4, the other end is connected with the negative pole of electric capacity C2, the compositions such as the electric capacity C1 that positive pole is connected with the base stage of triode VT5, negative pole is connected with inverter circuit; The utility model is provided with voltage stabilizing circuit, and its alternating voltage that system can be made to export is more stable, plays a protective role to load and system itself.
Description
Technical field
The utility model relates to electronic applications, specifically refers to a kind of low-pass filtering inversion system of high stability.
Background technology
Inverter is that direct current energy is transformed into alternating current.It is widely used in air-conditioning, home theater, electric wheel, electric tool, sewing machine, DVD, VCD, computer, TV, washing machine, smoke exhaust ventilator, refrigerator, video tape recorder, massager, fan, illumination etc.Abroad because popularity rate higher the go out work or out on tours and available inverter of automobile connect storage battery drive electrical equipment and various tool work.Output household electrical appliance being connected to power supply changeover device just can use various electrical equipment in automobile.
But its forward maximum of wave mode that the inversion system used at present exports almost produces at the same time to maximum negative value, like this, causes violent de-stabilising effect to load and inversion system itself.
Utility model content
The purpose of this utility model is that its forward maximum of wave mode overcoming the output of current inversion system almost produces at the same time to maximum negative value, load and inversion system itself are caused to the defect of violent de-stabilising effect, a kind of low-pass filtering inversion system can stablizing the high stability of output AC electricity is provided.
The following technical scheme of the purpose of this utility model realizes: a kind of low-pass filtering inversion system of high stability, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, the low-pass filter circuit be connected with the former limit of transformer T1 forms, between logic control circuit and low-pass filter circuit, be also provided with voltage stabilizing circuit, described voltage stabilizing circuit is by triode VT4, triode VT5, pressurizer U, positive pole is connected with the base stage of triode VT5 after diode D5, negative pole andlogic control circuit be connected electric capacity C2, one end is connected with the emitter of triode VT4, the resistance R6 that the other end is connected with the negative pole of electric capacity C2, positive pole is connected with the base stage of triode VT5, the electric capacity C1 that negative pole is connected with inverter circuit, and N pole is connected with the collector electrode of triode VT5 after electric capacity C3, the diode D6 that P pole is connected with negative pole and the low-pass filter circuit of electric capacity C2 simultaneously forms, the emitter of described triode VT5 is connected with the base stage of triode VT4, collector electrode is connected with low-pass filter circuit, the base stage andlogic control circuit of triode VT4 is connected, collector electrode is connected with the IN pin of pressurizer U, the OUT pin of described pressurizer U is connected with low-pass filter circuit, GND pin ground connection.
Further, described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, the resistance R2 that one end is connected with the drain electrode of field effect transistor Q1, the other end is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, N pole is connected with the collector electrode of triode VT1, the diode D2 that P pole is connected with the grid of field effect transistor Q2, N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel; The drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the emitter of triode VT5, the collector electrode of triode VT1 is connected with the grid of field effect transistor Q1, grounded emitter, base stage andlogic control circuit are connected, and the N pole of diode D2 is also connected with the negative pole of electric capacity C1.
Described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the base stage of triode VT4 forms; The base stage of described triode VT2 simultaneously with the base stage of triode VT1 and the P pole of diode D4 is connected, collector electrode is connected with the emitter of triode VT5, emitter is connected with the emitter of triode VT3, with the base stage of triode VT1 and the negative pole of electric capacity C2 is connected, collector electrode is connected with the negative pole of electric capacity C2 while of the base stage of triode VT3.
Described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the electric capacity C6 that positive pole is connected with the base stage of triode VT6, the electric capacity C7 be in parallel with electric capacity C6, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R9 of other end ground connection after resistance R8, negative pole is connected with the inverting input of amplifier P1, the electric capacity C4 that positive pole is connected with the OUT pin of pressurizer U, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C5 that positive pole is connected with the emitter of triode VT4 after resistance R7 forms, the base stage of described triode VT6 is connected with the P pole of diode D6, collector electrode is connected with the negative pole of electric capacity C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R9, output is connected with the non-same polarity of transformer primary side inductance coil L1 and the collector electrode of triode VT5 simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is provided with voltage stabilizing circuit, and its alternating voltage that system can be made to export is more stable, plays a protective role to load and system itself.
(2) the utility model is provided with low-pass filter circuit, makes inversion system when driving heavy load power consumption equipment, and protection power consumption equipment does not damage by triple-frequency harmonics.
(3) the utility model structure is simple, and energy efficient.Simultaneously passable raising load capacity, meets the demand that high-power electric appliance or multiple-purpose electric appliance use simultaneously.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the low-pass filtering inversion system of high stability of the present utility model, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, the low-pass filter circuit be connected with the former limit of transformer T1 forms.In order to realize the purpose of this utility model, between logic control circuit and low-pass filter circuit, be also provided with voltage stabilizing circuit.
Wherein, voltage stabilizing circuit is by triode VT4, triode VT5, pressurizer U, positive pole is connected with the base stage of triode VT5 after diode D5, negative pole andlogic control circuit be connected electric capacity C2, one end is connected with the emitter of triode VT4, the resistance R6 that the other end is connected with the negative pole of electric capacity C2, positive pole is connected with the base stage of triode VT5, the electric capacity C1 that negative pole is connected with inverter circuit, and N pole is connected with the collector electrode of triode VT5 after electric capacity C3, the diode D6 that P pole is connected with negative pole and the low-pass filter circuit of electric capacity C2 simultaneously forms, the emitter of described triode VT5 is connected with the base stage of triode VT4, collector electrode is connected with low-pass filter circuit, the base stage andlogic control circuit of triode VT4 is connected, collector electrode is connected with the IN pin of pressurizer U, the OUT pin of described pressurizer U is connected with low-pass filter circuit, GND pin ground connection.By the effect of voltage stabilizing circuit, the alternating voltage that system can be made to export is more stable, plays a protective role to load and system itself.In order to better implement the utility model, described pressurizer U is preferably W7824 type integrated circuit.
Described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, the resistance R2 that one end is connected with the drain electrode of field effect transistor Q1, the other end is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, N pole is connected with the collector electrode of triode VT1, the diode D2 that P pole is connected with the grid of field effect transistor Q2, N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel; The drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the emitter of triode VT5, the collector electrode of triode VT1 is connected with the grid of field effect transistor Q1, grounded emitter, base stage andlogic control circuit are connected, and the N pole of diode D2 is also connected with the negative pole of electric capacity C1.After direct current input is come in, by the reversion reaction of inverter circuit, converting direct-current power into alternating-current power is exported.
Described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the base stage of triode VT4 forms; The base stage of described triode VT2 simultaneously with the base stage of triode VT1 and the P pole of diode D4 is connected, collector electrode is connected with the emitter of triode VT5, emitter is connected with the emitter of triode VT3, with the base stage of triode VT1 and the negative pole of electric capacity C2 is connected, collector electrode is connected with the negative pole of electric capacity C2 while of the base stage of triode VT3.
Described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the electric capacity C6 that positive pole is connected with the base stage of triode VT6, the electric capacity C7 be in parallel with electric capacity C6, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R9 of other end ground connection after resistance R8, negative pole is connected with the inverting input of amplifier P1, the electric capacity C4 that positive pole is connected with the OUT pin of pressurizer U, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C5 that positive pole is connected with the emitter of triode VT4 after resistance R7 forms, the base stage of described triode VT6 is connected with the P pole of diode D6, collector electrode is connected with the negative pole of electric capacity C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R9, output is connected with the non-same polarity of transformer primary side inductance coil L1 and the collector electrode of triode VT5 simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.By the effect of low-pass filter circuit, make inversion system when driving heavy load power consumption equipment, protection power consumption equipment does not damage by triple-frequency harmonics.
As mentioned above, just well the utility model can be realized.
Claims (4)
1. the low-pass filtering inversion system of a high stability, primarily of transformer T1, inverter circuit, the logic control circuit be connected with inverter circuit, the low-pass filter circuit be connected with the former limit of transformer T1 forms, and it is characterized in that: between logic control circuit and low-pass filter circuit, be also provided with voltage stabilizing circuit, described voltage stabilizing circuit is by triode VT4, triode VT5, pressurizer U, positive pole is connected with the base stage of triode VT5 after diode D5, negative pole andlogic control circuit be connected electric capacity C2, one end is connected with the emitter of triode VT4, the resistance R6 that the other end is connected with the negative pole of electric capacity C2, positive pole is connected with the base stage of triode VT5, the electric capacity C1 that negative pole is connected with inverter circuit, and N pole is connected with the collector electrode of triode VT5 after electric capacity C3, the diode D6 that P pole is connected with negative pole and the low-pass filter circuit of electric capacity C2 simultaneously forms, the emitter of described triode VT5 is connected with the base stage of triode VT4, collector electrode is connected with low-pass filter circuit, the base stage andlogic control circuit of triode VT4 is connected, collector electrode is connected with the IN pin of pressurizer U, the OUT pin of described pressurizer U is connected with low-pass filter circuit, GND pin ground connection.
2. the low-pass filtering inversion system of a kind of high stability according to claim 1, it is characterized in that: described inverter circuit is by field effect transistor Q1, field effect transistor Q2, triode VT1, one end is connected with the drain electrode of field effect transistor Q1, the resistance R2 that the other end is connected with the collector electrode of triode VT1, P pole is connected with the drain electrode of field effect transistor Q1 after resistance R1, the diode D1 that N pole is connected with the collector electrode of triode VT1, P pole is connected with the grid of field effect transistor Q2, the diode D2 that N pole is connected with the base stage of triode VT1 after resistance R4, and form with the resistance R3 that diode D2 is in parallel, the drain electrode of described field effect transistor Q1 is connected with the drain electrode of field effect transistor Q2 as a galvanic input, source electrode, grid is connected with the emitter of triode VT5, the collector electrode of triode VT1 is connected with the grid of field effect transistor Q1, grounded emitter, base stage andlogic control circuit are connected, and the N pole of diode D2 is also connected with the negative pole of electric capacity C1.
3. the low-pass filtering inversion system of a kind of high stability according to claim 2, it is characterized in that: described logic control circuit is by triode VT2, triode VT3, the diode D4 that N pole is connected with the base stage of triode VT2, P pole is connected with the base stage of triode VT3 after diode D3, and the resistance R5 that one end is connected with the P pole of diode D4, the other end is connected with the base stage of triode VT4 forms; The base stage of described triode VT2 simultaneously with the base stage of triode VT1 and the P pole of diode D4 is connected, collector electrode is connected with the emitter of triode VT5, emitter is connected with the emitter of triode VT3, with the base stage of triode VT1 and the negative pole of electric capacity C2 is connected, collector electrode is connected with the negative pole of electric capacity C2 while of the base stage of triode VT3.
4. the low-pass filtering inversion system of a kind of high stability according to claim 3, it is characterized in that: described low-pass filter circuit is by amplifier P1, triode VT6, negative pole is connected with the output of amplifier P1, the electric capacity C6 that positive pole is connected with the base stage of triode VT6, the electric capacity C7 be in parallel with electric capacity C6, one end is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, the resistance R9 of other end ground connection after resistance R8, negative pole is connected with the inverting input of amplifier P1, the electric capacity C4 that positive pole is connected with the OUT pin of pressurizer U, and negative pole is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the electric capacity C5 that positive pole is connected with the emitter of triode VT4 after resistance R7 forms, the base stage of described triode VT6 is connected with the P pole of diode D6, collector electrode is connected with the negative pole of electric capacity C4, and the normal phase input end of amplifier P1 is connected with the tie point of resistance R8 with resistance R9, output is connected with the non-same polarity of transformer primary side inductance coil L1 and the collector electrode of triode VT5 simultaneously, the non-same polarity of described transformer primary side inductance coil L1 is connected with the Same Name of Ends of inductance coil L2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699039.2U CN204316318U (en) | 2014-11-19 | 2014-11-19 | A kind of low-pass filtering inversion system of high stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699039.2U CN204316318U (en) | 2014-11-19 | 2014-11-19 | A kind of low-pass filtering inversion system of high stability |
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| Publication Number | Publication Date |
|---|---|
| CN204316318U true CN204316318U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420699039.2U Expired - Fee Related CN204316318U (en) | 2014-11-19 | 2014-11-19 | A kind of low-pass filtering inversion system of high stability |
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| Country | Link |
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| CN (1) | CN204316318U (en) |
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2014
- 2014-11-19 CN CN201420699039.2U patent/CN204316318U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151119 |
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| EXPY | Termination of patent right or utility model |